Anglo Irish Bank has begun proceedings against financier Niall McFadden to force him to repay borrowings of more than €15m.
The borrowings relate to loans granted in September and November last year.
Mr McFadden is also being pursued for payment of €6.3m by National Irish Bank arising from his personal guarantee to buy the classified ads business Buy and Sell.
NIB is also seeking the repayment of €8.56m in another personal guarantee.